Re: [Jprogramming] Filling in Missing Parts of a Sequence
There is a verb resamp in https://code.jsoftware.com/wiki/Phrases/Arith. -- For information about J forums see http://www.jsoftware.com/forums.htm
Re: [Jprogramming] [Jgeneral] interpolation (equidistant re-sampling)
In these cases I use resamp from https://code.jsoftware.com/wiki/Phrases/Arith. Regards, Mario -- For information about J forums see http://www.jsoftware.com/forums.htm
Re: [Jprogramming] Fwd: problem with math/uu
Thank you very much. Mario Ian Clark schrieb am Di., 30. Juni 2020, 01:19: > Bug fixed in math/uu, Version 2.1.27. Please update via package manager. > >load 'math/uu' > > uu '1 /mm^2' NB. viz. "one item per square-mm" > > 1.0E6 /m² > > uu'*ssic 3' NB. set SI conformity level to 3 for output > > 3 > > uu '1 /mm^2' > > 1.0E6 m⁻² > > uu '1 mm⁻²' > > 1.0E6 m⁻² > > VERSION_uu_ > > 2.1.27 > > > Thank you for reporting bugs in math/uu. > > Please continue to report failures to conform to the "SI Units" standard. > > > Ian Clark > > > On Sat, 27 Jun 2020 at 13:31, Mario C wrote: > > > There is an other problem. > >uu '1 /mm^2' > > 1.0E-6 /m^2 is wrong. > > > > 2.1.26 j901 Windows and Android > > Mario > > -- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > -- > For information about J forums see http://www.jsoftware.com/forums.htm > -- For information about J forums see http://www.jsoftware.com/forums.htm
Re: [Jprogramming] Fwd: problem with math/uu
uu '1 /mm' 0.001 /m NB. ist wrong NB.should be 1e3 /m uu '1 mm' 0.001 m NB. is correct and 'MPa' uu '1 N/mm^2' should be 1 MPa Mario Hauke Rehr schrieb am So., 28. Juni 2020, 18:27: > I think the question was rather about > 1e_6 = % *: 1e_3 > 0 > Instead, > 1e6 = % *: 1e_3 > 1 > But I don’t know math/uu; is / supposed to denote %? > Does uu '1 /(mm^2)' work? > > Am 28.06.20 um 18:15 schrieb Tom Arneson: > > Why? > > 1e6=*:1000 > > 1 > > > >> On June 27, 2020 at 7:31 AM Mario C wrote: > >> > >> There is an other problem.uu '1 /mm^2'1.0E-6 /m^2 is wrong. > >> 2.1.26 j901 Windows and > AndroidMario--For > information about J forums see http://www.jsoftware.com/forums.htm > > -- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > > -- > -- > mail written using NEO > neo-layout.org > > -- > For information about J forums see http://www.jsoftware.com/forums.htm > -- For information about J forums see http://www.jsoftware.com/forums.htm
Re: [Jprogramming] Fwd: problem with math/uu
There is an other problem. uu '1 /mm^2' 1.0E-6 /m^2 is wrong. 2.1.26 j901 Windows and Android Mario -- For information about J forums see http://www.jsoftware.com/forums.htm
Re: [Jprogramming] Fwd: problem with math/uu
Thank you very much. Mario Ian Clark schrieb am Mi., 6. Mai 2020, 13:43: > Addon: math/uu fixed… > > 'm^2' uu '1 cm cm' > > 1.0E-4 m² > > 'm^2' uu '1 cm^2' > > 1.0E-4 m² > > VERSION_uu_ > > 2.1.26 > > > Please update addon: math/uu > > On Tue, 5 May 2020 at 05:52, Ian Clark wrote: > > > Thanks for pointing this out. > > It appears math/uu is reading 'cm^2' as: c(m^2) instead of: (cm)^2 > > The bug affects every use of a scaling prefix (c, m, …) together with a > > power. > > I'll get to work on a fix for this. > > > > > > On Tue, 5 May 2020 at 00:37, Tom Arneson wrote: > > > >> I see the same problem in both Windows and Android j901/j64/android > >> > >> > >> > -- Original Message --From: Mario C < > mc235...@gmail.com>To: > >> programming@jsoftware.comDate: May 4, 2020 at 4:49 PMSubject: > >> [Jprogramming] problem with math/uu > >> > load 'math/uu' NB. math/uu 2.1.24 > >> > There is a difference between > >> > 'kN' uu '10990 bar cm cm'109.9 kN > >> > and > >> > 'kN' uu '10990 bar cm^2'10990 kN > >> > Only the first solution is correct. > >> > Engine: j901/j64avx/windowsRelease-e: commercial/2020-01-29Library: > >> 9.01.23 > >> > But both work fine with Android (math/uu 2.1.24):Engine: > >> j901/j32/androidRelease-e: commercial/2020-02-09T15:23:16Library: > 9.01.22 > >> > > >> > Mario--For > >> information about J forums see http://www.jsoftware.com/forums.htm > >> -- > >> For information about J forums see http://www.jsoftware.com/forums.htm > >> > > > -- > For information about J forums see http://www.jsoftware.com/forums.htm > -- For information about J forums see http://www.jsoftware.com/forums.htm
[Jprogramming] problem with math/uu
load 'math/uu'NB. math/uu 2.1.24 There is a difference between 'kN' uu '10990 bar cm cm' 109.9 kN and 'kN' uu '10990 bar cm^2' 10990 kN Only the first solution is correct. Engine: j901/j64avx/windows Release-e: commercial/2020-01-29 Library: 9.01.23 But both work fine with Android (math/uu 2.1.24): Engine: j901/j32/android Release-e: commercial/2020-02-09T15:23:16 Library: 9.01.22 Mario -- For information about J forums see http://www.jsoftware.com/forums.htm
Re: [Jprogramming] generate integers from a to be with a step
I prefer load 'numeric' steps 5 9 8 etc. The definitions of steps in 'stats/base' and 'numeric' are identical. Mario -- For information about J forums see http://www.jsoftware.com/forums.htm
[Jprogramming] spline - fix
I think there is a mistake in verb cubicspline (spline addon) for intervals different than 1.0. If you try an interval of 0.1: load 'math/misc/spline plot numeric' x=. 1.1 1.2 1.3 1.4 1.5 y=. 351.6 351.6 354.6 371.0 387.7 csp=. cubicspline x,:y plot csp interspline range 1.1 1.5 0.02 you see the problem. It works after removal of the square verb in line 16 of spline.ijs (verb cubicspline). line 16 old: w=. 3 * diff k % *: h line 16 new: w=. 3 * diff k % h Regards, Mario (j901beta-p j9.01.13 win64) -- For information about J forums see http://www.jsoftware.com/forums.htm
[Jprogramming] plot type - horizontal bar chart
Is there a chance to get the plot type of a horizontal bar chart? Best regards, Mario Chemnitz -- For information about J forums see http://www.jsoftware.com/forums.htm
Re: [Jprogramming] Expression to generate sequ
Hi, that's my version with i:
seq=: monad : '{.y+/(-@>:@| {. i:) (-/|.y)'
Mario
Devon McCormick schrieb am So., 8. Apr. 2018, 01:52:
> Thanks to everyone who answered - there were a few that were just what I
> needed.
>
> On Sat, Apr 7, 2018 at 6:48 AM, 'Pascal Jasmin' via Programming <
> programm...@jsoftware.com> wrote:
>
> > there is also,
> >
> > iota =: i. : (+ i.)
> >
> >
> > 3 iota 5
> > 3 4 5 6 7
> >
> > ([ iota >:@-~)/ 3 7
> > 3 4 5 6 7
> >
> > 3 iota _5
> > 7 6 5 4 3
> >
> >
> >
> > From: Joe Bogner
> > To: programm...@jsoftware.com
> > Sent: Friday, April 6, 2018 3:50 PM
> > Subject: Re: [Jprogramming] Expression to generate sequ
> >
> >
> >
> > Lightly tested and non-optimized and ugly, but seems to work!
> >
> > genseq=:({: + i.@:>:@:-/)@]
> >
> > seq =: (] (>/@[ \:~@]^:[ genseq) \:~) f.
> >
> >
> > ] (>/@[ \:~@]^:[ ({: + i.@:>:@:-/)@]) \:~
> >
> >
> > seq 3 7 3 4 5 6 7 seq 7 3 7 6 5 4 3
> >
> >
> >
> >
> > On Fri, Apr 6, 2018 at 3:23 PM, Devon McCormick
> > wrote:
> >
> > > Hi -
> > >
> > > I'm working with selecting sequential items from a vector given a
> > starting
> > > and an ending point as a pair of integers. If we assume we always get
> > the
> > > pair as (lesser, greater), something like this suffices:
> > >
> > >seq=: {. + [: i. [: >: -~/
> > >seq 3 7
> > > 3 4 5 6 7
> > >
> > > However, if our assumption about the order of our points is violated,
> we
> > > get nonsense:
> > >
> > >seq 7 3
> > > 7 8 9
> > >
> > > Just for robustness, how could we write a version of "seq" that would
> > > return the sequence in reverse order in this latter case, i.e. give the
> > > proper sequence from seven to three: 7 6 5 4 3 ?
> > >
> > > I generalized the "seq" verb to remove the ordering assumption: my idea
> > was
> > > to generate the ascending sequence, then flip it if >/y is true. I
> tried
> > > this with "agenda" but am not sure how to get it to work on one thing -
> > the
> > > ascending vector - on the basis of comparison of another thing - the
> pair
> > > of integers.
> > >
> > > I did achieve this using the "power" conjunction:
> > >
> > >seq=: 3 : '|.^:(>/y)](<./ + [: i. [: >: >./ - <./) y'
> > >seq 3 7
> > > 3 4 5 6 7
> > >seq 7 3
> > > 7 6 5 4 3
> > >
> > > Does anyone have any ideas for a more elegant, preferably tacit,
> > solution?
> > >
> > > Thanks,
> > >
> > > Devon
> > > --
> > >
> > > Devon McCormick, CFA
> > >
> > > Quantitative Consultant
> > > --
> > > For information about J forums see http://www.jsoftware.com/forums.htm
> >
> > --
> > For information about J forums see http://www.jsoftware.com/forums.htm
> > --
> > For information about J forums see http://www.jsoftware.com/forums.htm
> >
>
>
>
> --
>
> Devon McCormick, CFA
>
> Quantitative Consultant
> --
> For information about J forums see http://www.jsoftware.com/forums.htm
--
For information about J forums see http://www.jsoftware.com/forums.htm
